He's flirted with redemption over the years, but the end of Season 4 made it clear that he has fully embraced his dark side. There's also the fact that he killed almost as many people in Season 4 as he did in the other three seasons COMBINED.
Here's everyone that Joe has killed across all four seasons of You, in order from least to most upsetting:
🚨🚨HUGE SPOILER WARNING 🚨🚨 for You Season 4.
This post contains mentions of sexual assault, murder, and light gore.